serve: Handle case where server subprocess times out #49233
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If `wait()` times out, the `exitcode` attribute will not be set. Instead, it'll be `None`. Handle this case and log a warning that the server process timed out, instead of throwing in the else-clause when trying to format `None` as `%d`.
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Unfortunately, hard to tell if this CI run hit the flaky timeout condition in "tools/ unittests: macOS + Python 3.8", which is where I've been seeing it. |
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If
wait()times out, theexitcodeattribute will not be set. Instead, it'll beNone. Handle this case and log a warning that the server process timed out, instead of throwing in the else-clause when trying to formatNoneas%d.